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Q. A block of mass $ 2\,kg $ rests on a horizontal surface. If a horizontal force of $ 5\,N $ is applied on the block the frictional force on, it is $ (\mu _{k}=0.4,\,\mu _{s}=0.5) $

J & K CETJ & K CET 2006Laws of Motion

Solution:

Correct answer is (b) $ 10\,\,N $